Dumping mechanism for truck bodies



Dec. l, 1925 1,563,639

w. H. MccoRMlcK DUMPING MECHANISM FOR TRUCK BODIES Decg L 1925.

1.563.639 W. H. MGCORMlCK DUMPING MECHANSM FOR TRUCK BODIES Filed May 5, 19215 5 Sheets-Sheet 2 Dec. 1A, 1925 1,563,639

w. H. MccoRMlcK DUMPING MECHANISM FOR TRUCK BODIES Filed May 5, 1923 5 Sheets-Sheet :5

Patented Dec. 1, 1925i.

unirsi)` STATES WALLACE HI. MCGORMICK, STRETOR, ILLINOIS.

DUMPING MECHANISM FOR TRUCK BODE'S.

Application led May 5,

To all whom 'it may concern.'

Be it known that I, WALLACE H. MCCOR- MIGK, a citizen of the United States, and resident oit Streator, county of La Salle and State oi' Illinois, have invented certain new and useful Improvements in Dumping h/Iechanism for Truck Bodies, of which the following is a specification, and which are illustrated in the accompanying drawings, forming a part thereof. v

This invention relates to trucks, and more particularly to dumping trucks or trucks in which the load is discharged by elevating one portion of the truck.

One Aoi the objects of the invention is the provision of new and improved means whereby a body may be easily and readily tiltably mounted on chassis frames ot" diflerent widths and types without in any way injuring or weakening said frames.

Another object of the invention is the provision of new and improved body hoisting mechanism `that is adapted to be mounted on chassis frames of various widths together with new and improved means for holding the body in normal position on the 'frame and for holding it in adjusted tilted position during the dumping operation.

A still further object of the invention is the provision of new and improved means for checking or controlling the descent of the hoisting body during its return to nor mal position on the chassis frame.

Gther and further objects and advantages of the invention will appear'from the following description taken in connection with the accompanying drawings, in which:

Fig. 1 is side elevation of a portion oi dumping truck showing the body in elevated position, parts broken away;

Fig. 2 is rear elevation of one ot th-e hoisting standards with a portion of the frame and the clamping plates in section;

Fig. 3 is vertical section of the same taken on a plane extending longitudinally of the chassis frame; I i

Fig.` l is detail view of a portion oli the fieXible hoisting members and the connecting member;

Fig. 5 is perspective view'of a portion of the Jfront end of the dumping bodv with the chassis frame in section and showing the application of the latching means;

Fig. 6 is a bottom plan of the latching mechanism with parts of the vehicle in section and parts broken away;

1923. serial No. 636,891.

Fig is a perspective view of a portion of the vehicle showing the hoisting mechanism attached thereto with parts broken away;

Fig. 8 is a perspective view of the rear portion ot' the chassis trame and body with the body in elevated position and showing the application of the hinge members thereto;

Fig. 9 is a section on line 9-9 of Fig. 8 with the body in lowered position, parts broken away;

F 10 is detail view of a portion of the hoisting mechanism; and

Fig. 11 is a section online 11H11 o'f'Fig. 10.

On the drawing the reference numeral 10 designates a chassis trame comprising the longitudinal side members 11 and 12 and the rear cross member 13. The chassis trame is supported from the axle lf-l by means ot' the springs 15 in the usual manner. A cab 16 is suitably mounted on the iiront of the chassis trame and is provided with the usual door opening 17.

A body 18 comprising the longitudinally extending side sills 19 and the transverse members 2O secured to the upper sides of the sills 19, is adapted to be mounted on the chassis frame. Suitable means are provided tor pivotally or tiltably connecting vthe rear end O1c the dumping body to the chassis trame. The hinges or pivot connections are so arranged that they will accommodate bodies or chassis frames ol' various widths and the members of the hinges are kso constructed that when the body-is in lowered position on the chassis frame there will be no strain or weight on the pivot pins. As shown on the drawing, comprises an upper hinge litting 21 and the lower hinge fitting 22. r1`he lower hinge litting 22 is preferably formed from angle` plates 23 and 24 secured to the outer end' oi' the rear cross member 13, by any suitable means such as the bolts 25 engaging in slotted openings in said plates. The slots permit lateral adjustment of the plates. 1n order to more firmly secure the lower hinge fitting in position the rear portions thereof may be bent downwardly as shown at 26 and secured to the rear flange ot' the rear cross member by any suitable means.

The upper hinge fitting may comprise two angle plates 27 and 28 which are adapted to be secured to each side of the sills 19 with their lower fianges extending beneath the each hinge member llO same. The hinge pintle 249 is adapted to connect the hinge fittings together. The angle plates 23 and 24 are so arranged that the distance between their upstanding flanges is considerably greater than the thickness of the sills 19 whereby bodies of different widths may be pivoted thereto.

A collar Bt) slidable on the pintle 29 havingthe setscrew 231 is adapted to properly position the body 'on the chassis frame. The .hinge pintle 29 preferably extends immediately above the bottom flanges of the angle plates 2T and 28 and through theupstanding flanges of the plates 23 and 24 at such a height that when :the body is in. lowered position on the chassis frame the plates 27 and 28 will rest on the fastening means 25 to thereby relieve the piiitle 29 from supporting any of the weight of the body.

Suitable means are provided for maintaining' the body in lowered position on the chassis frame. This means is preferably so arranged that it may be operated from the side ot' the body. As shown on the drawing, this means comprises the two latch members and 33 which are slidably mounted on the spacer member 34 carried by the transverse member 34 which in turn is secured to thc lower sides of the sills 19. These latch members are maintained in proper position by suitable bolts 32 and 33, carried by the transverse member 34 and engag-ing slots in said latch members.

The thickness of the spacer `member 34 is substantially that of the upper horizontal tiangeof the'chassis frame members 1l and l2 whereby the lat-ch members 32 and 33 will Vengage beneath the same to hold the body in lowered position on thechassis frame. A latch operating member pivotally connected as at 36 to the transverse member 34 is adapted to be pivotally connected as at 37 and 3S to the inner ends of the latch members 32 and 3? for operating the same.

A s'pring'l?) connected to the bolt 33a and to the latch or holding member 33 is adapted to maintain the latch members 32 and 33 in extended or latehed position. A handle 40 connected to the free end of the latch operating member 35 and extending to the side of the body is adapted to retract the latch members 32 and yA keeper 41 is adapted to engage the inner side of stop 42 for holding` the hitch members 32 and 3? in retracted position.

Suitable hoistingl mechanism for elevating the body is provided. rl`his hoisting' mechanism is so constructed and arranged that it may he detaehably secured to chassis frames of various widths and designs. In the form of the-*device selected for illustrating one einbodimentlof the invention, ournal or supporting plates 43 and 44 are adapted to be adjustablyY clamped as by means of the bolts tionof which at its lower end is bent to form an 'eye 47 which is adapted to engage a spacing sleeve 48 mounted on one of the clampingI bolts The side flanges of the member 4G are curved at their lower ends to correspond with the curve formed by the eye 47. The sleeve 48 extends through openings in the side flanges and engages the plates 43 and 44 to prevent the same from being clamped yagainst the standards 46. The upper ends of they standards are tiattened out 4and may be provided with loop members 49 which are adapted to be secured to the web portioirof said standards as by means of the bolts 49 and V50h Suitable guides or vpulleys 5() are adapted to be mounted on journals or bolts 49n in the loop members 49. The upper ends of the standards 4G are connected together as by means of the cross member 50a the ends of which are provided with slots 50 through which the bolts 50" extend. By'this arrangement the lower ends of the 'standards may be adjusted to chassis frames' of different widths.

A hoisting shaft 51 is journaled in the plates %k and 44. Flexible members or chains 52 having'y their lower ends connected to the shaft 51 are adapted to be trained over the pulleys or guides and have their free ends yconnected to the front. end of the dumping body 18.

A connecting` member which i s adapted kto connect the flexible members or chains 5i? at intermediate portions `thereof and hold the same inwardly toward each other, may ,ne employed to cause the chains or tiexible members 52 to properly wind on the shaft 5lV when the same is rotated.

Suitable means are provided for manually rotatingl the drum 51 for elevatingthe front end ofthe dumping body. As shown. the

vs'hatt 5l is exttnded outwardly beyond the Cil the keeper 60 secured to the cab 16 which engages-the handle 61 and prevents the rearward movement of the same. lWhen the handle is moved inwardly to engage the keeper GO it compresses the spring 5S whichv in turn holds the handle member t 5 in the said keeper. The shaft 51 is also provided with a ratchet 62 which lis adapted to be engaged by the pivoted pawl G3 for preventing nnwinding of the sha ft 51. A stop element, such as the fiexible member 63"l may be employed to limit the upward movement of the body.

rlhe pawl 623 is held in engagement with the ratchet wheel by a spring 64. Suitable means are provided for releasing the pawl (SS, from the side of the vehicle. As shown, a lever 65 is pivot-ally mounted on the cab 16 and its inn-er end is connected as by means of the flexible member G6 with the pawl o3 for releasing the same. A stop (i7 is adapted to limit the movement'of the lever'fi in one direction.

The standards 4G being pivoted as at l5 are free to turn about said pivots during the body raising and lowering operation, consequently there is not very much lateral thrust on these pivots. For the purpose of illustration these standards are shown in Fig. 1 as being out of Contact with the body. In practice, however, the standards. are in cont-act with the front end of the body during the raising and lowering thereof, as indicated in dotted lines in saidfigure. The friction of; the chains 52 yandstandards 16 against the front en d of the body tend to prevent a too preclpitous descenty of the body. In other words, by this arrangement the descent of the body is automatically cont-rolled to a certain extent. It will be 0bserved that the pivot bolts l5 for these standards are so located that little or none of the weight of the body is borne by them. The weight is supported by the lower ends of the standards resting ou the upper flanges of the sideI bars 11 and 12 of the chassis frame.

lf desired suitable braking means may be employed for controlling the descent of the body. For convenience of illustration this means is shown as comprising a band 68 havingl one end connected to the bolt 45, and its other end connected to the outer end of the pawl 63, and is adapted to be brought into engagement with the ratchet wheel G2 by the lever 65. The parts are so constructed and arranged that in moving the lever 65' downwardly the pawl 63 will first be disengaged and a further movement in the same direction will cause the brake band to engage a suitable brake drum as the ratchet wheel 62, as shown, to retard the unwinding movement of the shaft 51 and thereby control the descent of the body 1S from its elevated position.

rihe plate ('39 on which the lever (i5 is` ance for the outer end of the shaftl 51.

Likewise, the intermediate portion of the end of the floor which normally extends forwardly beyond the front cross member 71 may be cut away or removed to form a recess 72 in which the standards i6 are adapted to engage when the body is'in lowered position. By this arrangement the body can be brought up against or substan tially contiguous to the rear end of the cab 16.

It will be understood that various changes in the form, construction, composition and arrangement of the several parts may be resorted to without departing from the spirit and scope of myinvention; hence I do not wish to limit myself strictly t0 the structure herein set forth, but

lllhat l claim is 1, In combination, a chassis frame comprising longitudinal and transverseV frame members, a body provided with side sills, a plurality of hinges for connecting said body to said chassis, each hinge comprising a hinge fitting secured to one of said sills, said fitting comprising oppositely arranged angle plates having basesvand upstanding flanges engaging the sides and under surface of said sill and secured thereto, a corresponding hinge fitting comprising oppositely arranged angle plates having bases and upstanding flanges adjustably secured to said transverse frame member, and av rod for plivotally connecting said flanges together.

2. In combination, a chassis frame comprising longitudinal. and transverse frame members, a body having side sills mounted thereon, a hinge fitting secured to one of said sills, a hinge fitting secued to said transverse member, said last-named fitting comprising angle plates engaging said transverse member, and having upstanding flanges thereon, the distance between said flanges being materially greater than the width of said sill, a hinge ypintle extending through said flanges and said first-named fitting and means on said pintle for adjustably securing said first-named fitting along said pintle.

3. In combination, a chassis frame having channel side members, a body hinged to said frame, slidably mounted latch members for Cil :mism tor hoisting one end or said body, said mechanism including` arotatable hoisting shaft, a ratchet Wheel thereon, a crank hai'- ing a slot within which said shaft engages, paWl carried by said eranlz for engaging said ratchet "l mieel, a spring en` aging said cranl;` and a clip on said body ior engaging said crank and holding the same against. 'the tension of ,c aid spring,

An attachment tor dumping trucl-:s

comprising journal plates` bolts for clamp-v ing said plates to a chassis iframe, hoisting members comprising channel shaped standards, the side flanges at the lor-:er end of said standards being curved, and the Vweb portions thereot bent t-o torni bearing inembers, spacing sleeves 'journaled in said bearings, certain of said bolts extending through said sleeves, pulley supporting members secured in said channels at the upper ends ot' said standards and pulleys journaled in said supporting members.

6. ln combination, a chassis trame, a body pivoted thereon, hoisting mechanism for said body including hoisting standards, pulleys mounted on the upper ends thereof, a rotatable hoisting shaft, flexible members connected to said shaft and body and trained over said pulleys and a connecting member for the intermediate portions oi said flexible members to guide the Winding ot the same on said shaft.

T. An attachment ot the class described, comprising supporting plates, means iter clamping a pair et said plates to each ot the longitudinal members ot the chassis 'trame oi a motor vehicle, hoisting standards, each comprising a channel member having the lower end ot its web portion bent to torni an eye, a pin ttor pivotallj,v connecting said eye to said plates, a rotatable hoisting` shalt jonrnaled in said plates, guides carried by the upper ends ot said standards, Vtiexiblc members secured to said shaft and trained over said guides, and a cross member' adjustably connected to the upper portions ot said standards.

S. ln eon'ibination, a chassis trame, a cab on the t'ront end thereof, a body pivotally mounted thereon, means .tor elevating said body, said means including standards mounted on said trame adjacent to the rear oll "ab, the ifront end ot' said body haring a recess tor receiving said standards wherein' when said body is in lowered position thi` 'front end thereof is contiguous to said cab.

WALLACE H. MCCORMIGK. 

